Bitcoin slumps again after crypto hack theft

Bitcoin fell to a two-month low on Tuesday, sliding in three of the last four sessions on nagging regulatory and security concerns after the weekend hacking of South Korean cryptocurrency exchange Coinrail.

The original virtual currency is nearing its lowest level of the year of just under $6,000 on the Bitstamp platform. It fell to a low of below $6,500 and last traded down 4.7 per cent at $6,551.48.

So far in 2018, bitcoin is down nearly 53 per cent, after soaring more than 1,300 per cent last year.

On Sunday, Coinrail, a relatively small cryptocurrency exchange in South Korea, said its system was hit by "cyber intrusion," causing a loss of about 30 percent of the coins traded on the exchange. It did not quantify its value, but local news outlet Yonhap news estimated in an unsourced report that about $37.28 million worth of virtual coins were stolen.

The latest hacking wiped out more than $40 billion in the market value of the cryptocurrency market on Sunday. Bitcoin itself declined by nearly $1,000.

Bitcoin was able to recover after Sunday's bloodbath on Monday, but it has since continued its downtrend.

"Bitcoin is in a liquidity vacuum at the moment. Volumes on the crypto exchanges are now below $5bn per day, their lowest levels since November 2017, before things got out of hand," Mati Greenspan, senior market analyst at eToro, said.

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$46bn Bitcoin sell-off follows South Korean crypto exchange hack attack

Bitcoin plunges 5 per cent amid hacking fears at South Korean exchange

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"As the trading activity is very low, even a small amount of pressure can move the price quite drastically. Kind of like if you hit a baseball in outer space," he added.

Other digital currencies also declined in sympathy withbitcoin. Ethereum, the second-largest by market value, was down 5 per cent to $496.07, while the third-largest, Ripple, lost 4.3 per cent to $0.55, according to cryptocurrency price tracker coinmarketcap.com.

South Korea is one of the world's major cryptocurrency trading centres, and is home to one of the most heavily trafficked virtual coin exchanges, Bithumb.

Investors and regulators were jolted earlier this year after Japan's cryptocurrency exchange Coincheck was hacked in a high-profile theft of over half a billion dollars worth of digital currency.

Since the beginning of the year, bitcoin has been trading in a "descending triangle," with important support at $6,500 analysts at online FX broker FxPro said.

A move below $6,500 is a strong technical signal for a sell-off, FxPro said.